These are two links I suggest you use brethren & sistren. One is The Church of Haile I Selassie I, this is a very good
order of Rastafari. heres the link: http://www.himchurch.org/

The other is a web group based on the modern day order of Rastafari, one of the major houses, The 12 tribes of Israel.
This group is called 12 tribes live up! heres the link: http://groups.msn.com/TwelveTribesLiveUp/_homepage.msnw?pgmarket=en-us